Ventilator



G. C. BREIDERT.

VENTILATOR.

APPLICATION men APR. 19. 1918.

1A35 913, PatentedNovo 211, 1922 2 SHEETS-SHEET 1L Patented Nov, 21, 11922.

GEORGE C. BREIDERT, OF CHICAGO, ILLINOIS, A$SIGNOR TO AUTO UTILITIES MANU- FACTURING COMPANY, 015 OHIGAG'O, ILLINOIS, CQREQRATION OF ILLINOIS.

VENTILATOR.

Continuation of application Serial. No. 847,201., filed June 25, 1914.

This application filed April 18, 1918.

Serial No. 229,562.

T 0 all whom it may concern:

Be it known that l, GEORGE C. Bnnmnn'r, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Ventilators, of which the following is a specification.

My invention relates to a ventilator suitable for use on a railway ear, tram car, or other vehicle, and more particularly to a ventilator consisting of a hollow or boxlike structure arranged on the outside of the car with one or more open sides across which pass drafts of air artificially created by the impingement of air, due to the motion of the car, on a surface arranged at substantially right angles to the direction of movement of the car.

One of the objects of the invention is to provide a. ventilator of this type which may be arranged on the roof of the car directly over an opening therein.

A. further object is to provide certain novel arrangements in the open sides of the ventilator whereby rain, cinders, dust and the like, are prevented from entering the car through the ventilator and which effectively prevent any back draft of air into the car, particularly when the car is standing still and in case the wind is in such direction to make this a possibility.

The invention has for further objects such other new and improved constructions, arrangements and devices in car ventilators as will appear from the following description of a preferred embodiment of the invention.

This embodiment is shown in the accompanying drawings, wherein Fig. 1 is a view, in perspective, of the ventilator shown as installed on a car.

Fig. 2 is a view, in perspective, of the ventilator removed from the car.

Fig. 3 is a side view of the ventilator.

Fig. 4% is a sectional plan on line 4@4t of Fig. 3, and

Fig. 5 is a sectional view on line 5-5 of Fig. 4.

Like characters of reference designate like parts in the several figures of the drawings.

Referring to the drawings, 10 designates the body of a railway car, the roof 11 of which is formed with. an opening The ventilator comprises a bottom plate 13 having an opening 14 aligned with the opening in the car roof, a top plate 15 which is preferably concave interiorly for reasons which will appear, and a pair of air collecting faces 16, 16 disposed oppositely to each other, and substantially normal to the direc tion of movement of the car. Within each open side 17 of the ventilator is arrcnged a louvre comprising a series of vertically extending spaced strips 18 substantially parallel to the air collecting faces 1.6 and in spaced relation inwardly thereof a second louvre comprising a series of spaced strips 19 extending longitudinally of the car and preferably inclined inwardly and toward the top plate 15. Below the sets of strips 19 are arranged, at opposite sides of opening let, a pair of V-shaped strips 20, the apexes of which point toward the open sides of the ventilator. These strips 20 serve to intercept any water that may flow into the venilator from the roof and keep the same from entering the car through the opening 14: of the ventilator. The provision, in each of the open sides of the ventilator, of two louvres comprising sets of strips at right angles to each other and one set spaced from the other, is a very effective expedient for preventing any back draft of air into the car when the car is standing still, for example, without appreciably interfering with the outflow through the ventilator when the car is in motion. Moreover, the inclination of the inner strips 19 toward the top plate 15 of the ventilator tends to deflect any back draft away from the opening leading into the car. The possibility of choking the ventilator when the outflow is considerable, or when there is a side wind blowing through the ventilator. is minimized by making the top plate concave, viewed from the inside of the ventilator, as shown.

The air collecting faces 16 are preferably concave so as to prevent, as far as possible, the spilling of the air over the upper edges of the ventilator. In order to direct the air collected on these faces to the vertical edges thereof so that it will pass across the open sides of the ventilator, the air collecting faces are preferably formed with their center portions having the shape of a very obtuse V, as indicated at 21.

. Operation: With the ventilator arranged.

on the top of a car so that its air collecting faces 16 face the front and back of the car, the movement of the car in one direction or the other causes air to impinge upon one of these faces whereby a draft is created over the open sides of the ventilator which operates to evacuate the atmosphere of the car. While the openings 12, 141, between the ventilator and the car, are relatively large so that the ventilator will draw a relatively large quantity of air from the car when the latter is moving at ordinary speed, the louvre arrangement such that a strong side wind will not cause any back draft either when the car is in motion or standing.

This application is a continuation of my co-pending application Serial No. 847,201 filed June 25, 1914:, which application is a division of application Serial No. 763,047, filed April 23, 1913, on which Patent No. 1,104,472 issued on July 21, 1914-.

I claim:

1. The combination with a railway car having an opening in the roof thereof, of a ventilator comprising a box-like structure having openings in the sides parallel to the direction of motion and having imperforate end and top walls and an opening in the bottom corresponding to the opening in the car roof, and means arranged within said side openings comprising spaced sets of outer and inner louvres, the outer louvres comprising spaced vertical strips and the inner louvres comprising spaced horizontal strips inclined inwardly toward the top for preventing back drafts through said openings.

2. The combination with a railway car having an opening in the roof thereof; of a ventilator comprising a box-like structure having an imperforatc, interiorly concave top plate, a bottom plate having an opening registering with the opening in the roof of the car, imperforate air collecting faces disposed oppositely to each other and sub stantially normal to the line of movement of the car, and having open sides between said faces; louvres comprising vertically eX tending strips substantially parallel to said air collecting faces arranged in the open sides of the ventilator, and other louvres spaced inwardly with respect to the firstnamed louvres and comprising horizontally extending strips having upward inclination inwardly of the ventilator.

3. The combination with a railway car having an opening in the roof thereof; of a ventilator comprising a box-like structure having an imperforate top plate, a bottom plate having an opening registering with the opening in the roof of the car, imperforate air collecting faces disposed oppositely to each other and substantially normal to the line of movement of the car, and having open sides between said faces;

V-shaped strips at opposite sides of the opening in the bottom plate with their apexes directed toward the open sides of the ventilator, and a plurality of louvres in the open sides of the ventilator.

1. The combination with a railway car having an opening in a wall thereof, of a ventilator comprising a box-like structure having a plate adjacent to said wall formed with an opening corresponding to the opening in the wall, an imperforate, interiorly concave plate oppositely disposed with respect thereto, air collecting faces oppositely arranged with respect to each other and substantially normal to the direction of movement of the car, the other sides of said ventilator being open; a set of strips in the form of a louvre in each open side of the ventilator and substantially parallel with said air collecting faces, and another set of strips in the form of a louvre within the ventilator at each side thereof and having an inclination inwardly and toward. said concave plate, the strips of the inner set at each side being in angular and spaced relation with respect to the first named strips.

5. The combination with a railway car having an opening in the roof thereof, of.

a ventilator having open sides and comprising a box-like structure provided with an.

imperforate top plate, a bottom plate formed with an opening registering with the opening in the roof of the car, imperforate end walls providing air collecting surfaces arranged substantially normal to the direction of movement of the car, and a spaced set of louvres'in each of the open sides of said ventilator and between said air collecting faces, one of the louvres of each set comprising spaced vertical strips and the other louvre comprising spaced horizontal strips having an upward inclination inwardly of the ventilator.

6. The combination with a railway car having an opening in the roof thereof, of a ventilator having open. sides and comprising a box-like structure provided with an imperforate top plate, a bottom plate having an opening registering with the opening in the roof of the car, imperforate end walls opposite to each other and substantially normal to the lineof movement of the car adapted to provide air collecting surfaces which direct the impinged air across said open sides without obstructing the discharge of air from the interior of the car through said open sides, ll-shaped strips at opposite sides of the opening in the bottom plate with their apeXes directed toward the open sides of the ventilator, and a plurality of louvres extending across the ventilator from one air collecting face to the other above said ii-shaped strips.

7. The combination with a railway car having an opening in the roof thereof, of

a ventilator having openings in its sides and comprising a boX-likestructure provided With an imperforate top plate, a bottom plate having an opening registering with the opening in the roof of the car, imperforate end Walls disposed oppositely to each other and arranged substantially normal to the line of movement of the car, said end Walls constituting air collecting surfaces adapted to direct the air impinged against them across said open sides at a short distance therefrom, V-shaped strips at opposite sides of the opening in the bottom plate with their apexes directed toward the open sides of the ventilator a plurality of sets of horizontally disposed strips in the form of louvres extending across the ventilator from one air collecting face to the other above said f-shaped strips and sets of vertical strips in the form of louvres in the open sides of said ventilator, said vertical strips being substantially parallel With said end Walls and being in spaced relation With respect to the horizontal strips.

GEORGE C. BREIDERT. 

